1231101310303 has 4 divisors (see below), whose sum is σ = 1247965711888. Its totient is φ = 1214236908720.

The previous prime is 1231101310291. The next prime is 1231101310357. The reversal of 1231101310303 is 3030131011321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231101310303 - 2¹³ = 1231101302111 is a prime.

It is a super-2 number, since 2×1231101310303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231101310603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8432200683 + ... + 8432200828.

It is an arithmetic number, because the mean of its divisors is an integer number (311991427972).

Almost surely, 2^{1231101310303} is an apocalyptic number.

1231101310303 is a deficient number, since it is larger than the sum of its proper divisors (16864401585).

1231101310303 is an equidigital number, since it uses as much as digits as its factorization.

1231101310303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16864401584.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1231101310303 its reverse (3030131011321), we get a palindrome (4261232321624).

The spelling of 1231101310303 in words is "one trillion, two hundred thirty-one billion, one hundred one million, three hundred ten thousand, three hundred three".